Roms never work. Load screen always stuck!

So I rooted my phone successfully and used DMUpdater for the first like 2 hours haha. I then found ROM Manager hoping it would ease the use of downloading and installing roms. Well it is easier. I can download and update without hassle, but once I try to reboot my phone, it gets stuck on the DROID logo and the red droid eye image. I want to play around with more stuff, but I'm stuck on smoked glass 5.0 right now. Any help?